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Finding the Fourth Proportional to 6,261.99, 9,390.15 and 2,979.06

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Solution

The fourth proportional to 6,261.99, 9,390.15 and 2,979.06 is: 4,467.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,261.99 : 9,390.15 = 2,979.06 : x
  2. Step 2: Convert to fraction form
    6,261.99/9,390.15 = 2,979.06/x
  3. Step 3: Cross multiply
    6,261.99x = 9,390.15 × 2,979.06
  4. Step 4: Simplify right side
    6,261.99x = 27,973,820.26
  5. Step 5: Solve for x
    x = 27,973,820.26/6,261.99
  6. Step 6: Final answer
    x = 4,467.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.